(–)-Agelasidine A from Agelas clathrodes

2006 ◽  
Vol 61 (7-8) ◽  
pp. 472-476 ◽  
Author(s):  
Maria Augusta Medeiros ◽  
Ana Lourenço ◽  
Maria Regina Tavares ◽  
Maria João Marcelo Curto ◽  
Sónia Savluchinske Feio ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Marine Sponge ◽  
Methanol Extract ◽  
Spectroscopic Methods ◽  
Antifungal Activities ◽  
Antibacterial And Antifungal Activities ◽  
Bacteriostatic Agent ◽  
Antibacterial And Antifungal ◽  
First Time

(-)-Agelasidine A was identified from the methanol extract of the marine sponge Agelas clathrodes for the first time together with zooanemonin, 1-carboxymethylnicotinic acid, hymenidin, mukanadins A and C, monobromodispacamide, agelasidine D, 2-amide-4-bromopyrrole, O-methyltryptophan and an agelasines mixture. The structures were characterized by spectroscopic methods. (-)-Agelasidine A was tested for antibacterial and antifungal activities and shown to act as a bacteriostatic agent as it inhibited the growth of Staphylococcus aureus and partially the growth of other bacteria.

Synthesis and investigation of 3,5-bis-linear and macrocyclic tripeptidopyridine candidates by using l-valine, N,N′-(3,5-pyridinediyldicarbonyl)bis-dimethyl ester as synthon

2019 ◽  
Vol 74 (6) ◽  
pp. 473-478 ◽  
Author(s):  
Abd El-Galil E. Amr ◽  
Ahmed M. Naglah ◽  
Nermien M. Sabry ◽  
Alhussein A. Ibrahim ◽  
Elsayed A. Elsayed ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Candida Albicans ◽  
Organic Molecules ◽  
Biological Activities ◽  
Dimethyl Ester ◽  
Antimicrobial Activities ◽  
Current Work ◽  
Antifungal Activities ◽  
Antibacterial And Antifungal Activities ◽  
Antibacterial And Antifungal

AbstractInterest in the synthesis of heterocyclic organic molecules with peptide moieties has gained attention due to their potential biological activities. The current work aimed at synthesizing new macrocyclic tripeptide imides and evaluating their possible antimicrobial activities. A series of 11 derivatives were prepared from dimethyl 3,5-pyridinevalinyl ester either by NaOH or NH2NH2 treatment, followed by cyclization and further reaction with NaOH or NH2NH2. The majority of synthesized derivatives showed promising antibacterial and antifungal activities in comparison to standard known antibiotics. Compounds 5a and 7b showed the most potential antibacterial against Staphylococcus aureus and antifungal activities against Candida albicans, respectively.

scholarly journals Phytochemical and Antimicrobial Investigation of Latex from Euphorbia Abyssinica Gmel

2008 ◽  
Vol 3 (9) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
Fathy EL-Fiky ◽  
Kaleab Asres ◽  
Simon Gibbons ◽  
Hala Hammoda ◽  
Jihan Badr ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Oleanolic Acid ◽  
Unsaturated Fatty Acid ◽  
Methanol Extract ◽  
Antifungal Activities ◽  
Antibacterial And Antifungal Activities ◽  
Phytochemical Investigation ◽  
Antibacterial And Antifungal ◽  
Micro Organisms

Phytochemical investigation of the latex of Euphorbia abyssinica Gmel (Euphorbiaceae) afforded a new hydroxy unsaturated fatty acid, 8( R)-hydroxy-dec-3( E)-en-oic acid (1), in addition to the four known compounds lupeol (2), β-sitosterol (3), oleanolic acid (4) and β-sitosterol-3- O-glucoside (5). The in vitro antibacterial and antifungal activities of the isolated compounds, as well as the total methanol extract, were studied against different micro-organisms; compound 1 displayed reasonable antifungal activities towards the tested fungi.

scholarly journals Investigation of Bulb Extracts of Crinum jagus for Antibacterial and Antifungal Activities

2021 ◽  
Vol 25 (1) ◽  
pp. 113-117
Author(s):  
T.T. Alawode ◽  
L. Lajide ◽  
B.J. Owolabi ◽  
M.T. Olaleye
Keyword(s):  
Minimum Inhibitory Concentration ◽  
Inhibitory Concentration ◽  
Methanol Extract ◽  
Diffusion Method ◽  
Zone Of Inhibition ◽  
Antifungal Activities ◽  
Agar Diffusion ◽  
Antibacterial And Antifungal Activities ◽  
Successive Extraction ◽  
Antibacterial And Antifungal

This study investigates the bulb extracts of Crinum jagus for antimicrobial activities. The bulb samples were dried, ground and subjected to successive extraction using hexane, ethylacetate and methanol. The extracts were screened for activity against Staphylococcus aureus, Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa, Salmonella typhi, Klebisidlae pneumonae, Candida albicans, Aspergillus niger, Penicillium notatum and Rhizopus stolonifer at concentrations between 6.25 and 200 mg/ml. Antimicrobial assays werecarried out using agar diffusion method. The Minimum Inhibitory Concentration (MIC) of the extracts was determined. The percentage yields obtained for the hexane, ethylacetate and methanol extracts of the bulbs are 0.28 %, 0.44% and 24.68 % respectively. Results showed that the methanolic extract had better antibacterial and antifungal activities than the other extracts. The methanol extract showed the highest antibacterial activity against S. aureus with a zone of inhibition of 28 mm at 200 mg/ml. Also, the methanol extract showed the highest antifungal activities against C. albicans, A. niger and P. notatum with a zone of inhibition of 20 mm at 200 mg/ml. The hexane and ethylacetate extracts had no activity against the microorganisms at 6.25 mg/ml.The methanol extract had the lowest Minimum Inhibitory Concentration (MIC) of 2.50 mg/ml against S. aureus, E. coli, B. subtilis, P. aeruginosa and S. typhi. The methanol extract could be a source of potent antimicrobial compounds. Keywords: Antibacterial, Antifungal, Crinum jagus, Agar diffusion, MIC

scholarly journals Antimycobacterial, antibacterial and antifungal activities of the methanol extract and compounds from Thecacoris annobonae (Euphorbiaceae)

2010 ◽  
Vol 76 (3) ◽  
pp. 536-542 ◽  
Author(s):  
V. Kuete ◽  
H.M. Poumale Poumale ◽  
A.N. Guedem ◽  
Y. Shiono ◽  
R. Randrianasolo ◽  
...  
Keyword(s):  
Methanol Extract ◽  
Antifungal Activities ◽  
Antibacterial And Antifungal Activities ◽  
Antibacterial And Antifungal

scholarly journals Derivatization Does Not Influence Antimicrobial and Antifungal Activities of Applanoxidic Acids and Sterols from Ganoderma spp.

2006 ◽  
Vol 61 (1-2) ◽  
pp. 31-34 ◽  
Author(s):  
Artur Smania ◽  
Elza F. A. Smania ◽  
Franco Delle Monache ◽  
Moacir G. Pizzolatti ◽  
Giuliano Delle Monache
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Inhibitory Concentration ◽  
Trichophyton Mentagrophytes ◽  
Antifungal Activities ◽  
Antibacterial And Antifungal Activities ◽  
Microdilution Method ◽  
Antibacterial And Antifungal ◽  
Antimicrobial And Antifungal Activities ◽  
And Staphylococcus Aureus

Abstract Applanoxidic acids and sterols, isolated from Ganoderma spp., were acetylated and/or methylated. The antibacterial activity against Escherichia coli and Staphylococcus aureus and the antifungal activity against Candida albicans and Trichophyton mentagrophytes of the derivatives were investigated by a microdilution method, and compared with those of the natural products. Both natural and modified compounds exhibited comparable antibacterial and antifungal activities in a range of 1.0 to > 2.0 mg/ml minimal inhibitory concentration

scholarly journals Evaluation of antioxidant and antimicrobial activities of Oligomeris linifolia (Vahl) J.F. Macbr.

2019 ◽  
Vol 48 (3) ◽  
pp. 507-511
Author(s):  
Muhammad Nadeem Khan ◽  
Muhammad Wasim Khan ◽  
Rahmat Ali Khan
Keyword(s):  
Free Radical ◽  
Methanol Extract ◽  
Fine Powder ◽  
Antimicrobial Activities ◽  
Antifungal Activities ◽  
Methanol Extracts ◽  
Antibacterial And Antifungal Activities ◽  
Antibacterial And Antifungal ◽  
Therapeutic Compounds ◽  
Antioxidant And Antimicrobial Activities

Fine powder of Oligomeris linifolia was extracted with 70% methanol. Crude Oligomeris linifolia methanol extract (OLME) were assessed for antioxidant, antibacterial and antifungal characteristics. All the tested OLME showed potent antioxidant, antibacterial, and antifungal activities. The results clearly showed that Oligomeris linifolia methanol extracts is a source of potential therapeutic compounds against antibacterial, antifungal and free radical associated disorders.

Substituted 4-Formyl-2H-chromen-2-ones: Their Reaction with N-(2,3,4,6-Tetra-Oacetyl- β-D-galactopyranosyl)thiosemicarbazide, Antibacterial and Antifungal Activity of Their Thiosemicarbazone Products

2020 ◽  
Vol 24 (19) ◽  
pp. 2272-2282
Author(s):  
Vu Ngoc Toan ◽  
Nguyen Minh Tri ◽  
Nguyen Dinh Thanh
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Candida Albicans ◽  
Selenium Dioxide ◽  
Antibacterial And Antifungal Activity ◽  
E Coli ◽  
Antibacterial And Antifungal Activities ◽  
Alkyl Ethers ◽  
Antibacterial And Antifungal

Several 6- and 7-alkoxy-2-oxo-2H-chromene-4-carbaldehydes were prepared from corresponding alkyl ethers of 6- and 7-hydroxy-4-methyl-2-oxo-2H-chromen-2-ones by oxidation using selenium dioxide. 6- and 7-Alkoxy-4-methyl-2H-chromenes were obtained with yields of 57-85%. Corresponding 4-carbaldehyde derivatives were prepared with yields of 41-67%. Thiosemicarbazones of these aldehydes with D-galactose moiety were synthesized by reaction of these aldehydes with N-(2,3,4,6-tetra-O-acetyl-β-Dgalactopyranosyl) thiosemicarbazide with yields of 62-74%. These thiosemicarbazones were screened for their antibacterial and antifungal activities in vitro against bacteria, such as Staphylococcus aureus, Escherichia coli, and fungi, such as Aspergillus niger, Candida albicans. Several compounds exhibited strong inhibitory activity with MIC values of 0.78- 1.56 μM, including 8a (against S. aureus, E. coli, and C. albicans), 8d (against E. coli and A. niger), 9a (against S. aureus), and 9c (against S. aureus and C. albicans).

scholarly journals Chemical Composition and Antimicrobial Activity of the Essential Oil from Flowers of Eryngium triquetrum (Apiaceae) Collected Wild in Sicily

2016 ◽  
Vol 11 (7) ◽  
pp. 1934578X1601100
Author(s):  
Simona Casiglia ◽  
Maurizio Bruno ◽  
Sergio Rosselli ◽  
Felice Senatore
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Antifungal Activities ◽  
Antibacterial And Antifungal Activities ◽  
Art Works ◽  
Main Components ◽  
Antibacterial And Antifungal ◽  
Historical Art

The chemical composition of the essential oil from flowers of Eringium triquetrum Vahl. collected in Sicily was evaluated by GC and GC-MS. The main components were pulegone (50.6%), piperitenone (30.5%) and menthone (7.0%). Comparison of this oil with other studied oils of Eringium species is discussed. The oil showed good antibacterial and antifungal activities against some microorganisms that infest historical art works.

Sign in / Sign up

Export Citation Format

Share Document